(broadcasting) The time of day when a radio or television station begins broadcasting, usually after being off the air for several hours. / Alternative form of sign-on

To join something, after signing. / To commit oneself, as to a project, a goal, an organization, a cause.

The username and password for logging in to a computer account. / An attempt to log in. / (more generally) An instance of signing on to something. / A person who signs on to something.

present participle of sign in

Third-person singular simple present indicative form of sign in

Third-person singular simple present indicative form of sign on

present participle of sign on

simple past tense and past participle of sign in

simple past tense and past participle of sign on

The symbol @, most commonly used in e-mail addresses.